PriMera Scientific Engineering (ISSN: 2834-2550)

Research Article

Volume 8 Issue 2

Numerical Investigation of Passive Flow Control around a Cylinder with an Attached Splitter Plate

Fazal Rahman*

February 03, 2026

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Abstract

This research investigates the flow behavior around a cylinder with an attached splitter plate (L*) using the lattice Boltzmann method (LBM). Although previous research has focused on flow around bluff bodies without L*, this study examines the effects of L* on flow control. The key parameters analyzed include L* and the Reynolds number (Re). The vorticity contours, Drag coefficients CD, lift coefficients CL, and Strouhal numbers (St) are computed to elucidate the relationships L* and Re. The results demonstrate that wake flow patterns, flow features, and force coefficients are strongly influenced by both L* and Re. The flow is periodic at low Re, while it becomes irregular at high Re. The L* effectively suppresses vortex shedding. Small L* causes vortices to form near the cylinder, whereas large L* stabilizes vortex shedding. Overall, L* plays a great role in controlling vortex shedding, reducing drag, and regulating the lift force.

Keywords: Passive Method; Lattice Boltzmann Method; Vortex Shedding; Contours

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